Single-trigger mechanism for double-barrel guns.



1,140,903. Patented May 18, 1915.

2 SHEETSSHEET I.

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M. c. SANDERSON.

SINGLE TRIGGER MECHANISM FOR'DOU BLE BARREL GUNS. APPLICATION FILEDSEPT- 26, 1914.

1,140,003. Patented May18 1915.

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34 53 4 I 56 5 l 39 27 i Z M- C. 56w DEFZSON avwmdioz MARVIN C.SANDERSON, OF HACKLEBURG, ALABAMA.

SINGLE-TRIGGER MECHANISM FOR DOUBLE-BARREL GUNS.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed September 26, 1914. Serial No. 863,685.

To all 1072 0m it may concern Be it known that I, MARVIN C. SANDER- soN,a citizen of the United States, residing at Hackleburg, in the county ofMarion and State of Alabama, have invented certain new and usefulImprovements in Single-Trigger Mechanism for Double-Barrel Guns, ofwhich the following is a specification, reference being had to theaccompanying drawmgs.

This invention relates to new and useful improvements in guns, andparticularly to double-barrel guns.

An object of this invention is the provision of a double-barrel gun inwhich the hammers thereof are operated by a single trigger.

Another object of this invention is the provision of a double-barrel gunwhich is provided with single trigger mechanism, means being provided torelease either ham- Iner before the release of the other hammer.

Still another object of this invention is the provision of adouble-barrel single trigger gun which is provided with an adjustableactuating member for engagement with the hammer-holding sears, wherebyeither sear may be actuated before the other sear, so that the hammersmay be operated in any desired order.

With these and other objects in view, as will become more fully apparentas the description proceeds, my invention consists in the novelconstruction, combination, and in the arrangement of parts to behereinafter more fully described, claimed, and illus trated in theaccompanying drawings, in which Figure 1 is a side elevation showing theframe in dotted lines, with the hammers set and the sear actuatingmember engaged with the right hand sear so that the right hand hammerwill be operated before the left hand hammer; Fig. 2 is a view similarto Fig. 1 showing the sear operating member operatively engaged againstthe left hand sear so that it will be operated prior to the right handsear; Fig. 3 is a perspective view of the trigger plate showing thetrigger and sear selecting means connected thereto; Fig. 4 is anunderside plan view of the device, partly in section, with the triggerplate removed; Fig. 5 is a top plan view of the gun;

Fig. 6 is a perspective view of the slidable sear actuating member; Fig.7 is a perspective view of one of the springs for engagement with theoperating stem of the sear operating member; Fig. 8 is a perspectiveview of the spring plate for holding the sears in engagement with thehammer disks. Fig. 9 is a detail view showing one of the hammer disksand a spring head and sear engaged thereagainst.

Referring more particularly to the drawings, the numeral 1 designatesthe frame of the gun, and mounted in the side walls 2 of the frame is ashaft 3 upon which are pivotally mounted the right and left handhammer-holding sears 4 and 5, respectively. Rotatably mounted in theside walls 2 slightly forwardly of and above the shaft 3 are shortshafts 6 upon the outer squared ends of which the hammers 7 are securedand upon the inner ends of which within the frame are mounted the disks8 against the peripheries of which the forward tapered ends of thehammer-holding sears engage. Formed in the forward end of the frame is acentral longitudinally extending block 9 which provides chambers betweenthe side walls of the frame and the side faces of the block, andarranged in each chamber is a coiled expansion spring 10, the rear endsof the springs carrying heads 11 the rear end of each head beingprovided with an arcuate recess therein which provides a pair ofshoulders 12 and 13 which are adapted for engagement against the endwalls of arcuate recesses 14 formed in the disks 8. In the periphery ofeach disk 8 to one side of the recesses 14 formed therein, is a pair ofnotches 15, the forward ends of the sears being engaged with therearmost notches in the disks when the hammers are in cocked position orengaged in the foremost notches when the hammers have been tripped tofire the barrels. To hold the forward ends of the sears closely engagedagainst the peripheries of the disks, a spring plate 16 is secured tothe rear end of the block 9, the plate having a pair of rearwardlyextending arms 17 which bear against the forward ends of the sears. Tolimit the movement of the hammers 7 when the same are drawn to cockedposition, a pin 18 projects radially from each disk 8, the pins beingadapted to engage against the sears 4 and 5 when the hammers havereached their cocked position, the pins also serving to force theforward ends of the sears upwardly so that the extremities thereof willengage in the rearmost notches 15 in the disks and securely hold thehammers in cocked position.

Secured over the lower open end of the frame 1 is a trigger plate 19which is provided with a tang which projects rearwardly of the bodyportion of the frame, in substantially parallel relation with a tang 20which extends rearwardly from the top wall of the frame. Projectingupwardly from the rear end of the tang of the trigger plate is a post 21against which the rear end of the bar 20 engages, the rear portion ofthe trigger plate being secured in position by disposing a screw 22through the tang 20 into threaded engagement with the post 21. Extendingupwardly from the trigger plate adjacent its forward end is a block 23which is provided with a pair of spaced apertured lugs 23, between whichthe forward ends of a pair of spaced vertical webs 24 are engaged, thewebs being formed on the trigger 25 which extends downwardly through aslot 26 in the trigger plate. The forward ends of the webs 24 are alsoapertured and passed through the registering apertures in the lugs 23and the webs 24 is a pin 24 by means of which the trigger is pivotallyconnected to the block 23.

Slidably mounted between the upstanding webs 24 is a scar selectingactuating bar or member 27, the bar having a pair of slots 28 thereinthrough which pins 29 extend to limit the sliding movement of the barwith relation to the trigger. The rear end of the bar 27 projectsrearwardly of the webs 24 and lies upon the upper face of the triggerplate, thereby preventing downward movement of the webs through the slot26 in the plate, and formed in the lower edge of the rearwardlyprojecting portion of the bar 27 is a notch or recess 30 through whichthe angularly extended lower end 31 of an actuating stem 32 engages. Theupper end of the stem 32 projects through a slot 33 in the bar 20, andformed on the upper extremity of the stem is a head 34 by means of whichthe stem may be moved forwardly and rearwardly in the frame. To normallyhold the stem 32 in adjusted position, a pair of bowed springs 35 areengaged at their rear ends in a groove 36 in the post 21, the forwardends of the springs being engaged against the under face of the bar 20forwardly of the stem, and the opposing edges of the springs havingelongated recesses 38 formed therein to provide a slot through which thestem 32 extends, and the stem having a pin 39 projecting laterallytherethrough to engage against the lower faces of the springs 35,.whereby sliding movements of the head 34 and stem 32 are resisted by thetension of the springs.

The rear end of each sear 5 is provided with an lnturne'd extension 40,,the extension on the webs below the inturned ends 40 of i the sears, andformed in the upper edge of the bar 27, which is flush with the upperedges of the webs, is a notch 42 which is of the same size as thenotches 41 and is adapted to register therewith when the bar 27 is inits rearmost position. Formed on the upper edge of the bar 27 forwardlyof the notch 42 is an upstanding stem 43 which is provided at its upperextremity with a rearwardly projecting extension 44, the extension 44being in a plane for engagement between the inturned ends 40 of thesears.

In the'practical use of my device, the selector 27 may be adjustedbefore or after the hammers are set or cooked, to trip either of thesears before the other sear. When it is desired to fire the left handbarrel first, the head 34 of the stem 32 which is connected with theselector 27 is moved to its rearmost position, thereby moving thesearactuating bar rearwardly to dispose the notch 42 be low the inturnedend of the right hand sear 5 and the rearward extension 44 of theupstanding stem 43 on the bar 27 below the inturned end of the sear 4.lVhen the parts are in this position, with the hammers cooked and thetrigger 25 is pulled, the inturned end of the sear 4 will be raised bythe rearwardly extending projection 44, of the upstanding stem 43whereby to disengage the forward end of the sear 4 from the rearmostnotch 15 in the disk 8 of the left hand hammer so that the spring 10acting through head 11 against the disk of the left hand hammer willrotate the same to fire the left hand barrel. Owing to the registeringnotches 41in the webs 24 and the notch 42 in the upper edge of the searactuating bar, the inturned end of the sear 5 will not be engaged untilafter the sear 4 has been tripped, and upon a continued pull upon thetrigger the inturned end of the sear 5 will be engaged by the base wallsof the registering notches to raise the inner end of the sear 5 anddisengage the forward end of the sear from the disk of the right handhammer so that the right hand barrel will be fired.

After the gun. has been reloaded and it is desired to fire the righthand barrel prior to the left hand barrel, the head 34 is moved to itsforemost position so that the sear selector 27 will be moved forwardlybetween the upstanding webs of the trigger, whereby the rearwardlyprojecting extension 44 will be moved forwardly of the inturned ends ofthe sears and the upper edge of the bar 27 rearwardly of the notch 42will be disposed immediately below the inturned end 40 of the sear 5.WVith the sear actuating bar in this position, when the trigger ispulled, the sear 5 is first actuated by reason of the engagement of thebar 27 with the inturned end of the sear, to fire the right hand barrelfirst. The space between the inturned ends 40 of the sears is sufficientto allow the firing of the right hand barrel before the end 40 of thesear 5 engages the inturned end of the left hand sear 4, and upon acontinued pull on the trigger, the engagement of the inturned end of thesear 5 with the inturned end of the sear 4 will actuate the left handsear 4 to fire the left hand barrel after the right hand barrel has beenfired. By the provision of the pins 29 which project through the slots28 in the sear actuating bar, the sliding movement of the bar 27 withrelation to the webs of the trigger is limited and when the pins 29 aredisposed in either end of the slots, the bar is then in position toactuate one of the sears prior to the other.

From the above description taken in connection with the accompanyingdrawings, it will be seen that I provide an extremely simple triggermechanism for double-barrel guns, in which a predetermined sear may beactuated prior to the other sear either before or after the hammers ofthe gun are cocked, the sear actuating means being so arranged that bothof the barrels may be fired successively upon a continued pull upon thetrigger.

Having thus described my invention, what I desire to claim and secure byLetters Patent is;

1. In a single trigger mechanism for double-barrel guns, a pair ofparallel sears, each having an inwardly extending lug, said lugs beingdisposed in vertically spaced registering relation, and a sear actuatingand selecting member having a notch and a projecting lug disposed insuch relation to each other that when the lug is beneath one sear thenotch will be coincidently beneath the other sear, a trigger operativelyconnected with the actuating member to raise the latter, and means forlongitudinally shifting the sear actuating member.

2. In a single trigger mechanism for double-barrel guns, a pair ofparallel sears, each having an inwardly extending lug, said lugs beingdisposed in vertically spaced registering relation and a longitudinallyshiftable sear actuating and selecting member having a notch upon itsupper edge and an upwardly projecting lug forward of the notch, said lughaving a rearwardly projecting portion at its upper end partiallyoverhanging the notch, the rear end of the notch providing a shoulderadapted, when the actuating member is shifted forward to carry its lugfrom beneath one sear, to be carried forward beneath the other sear.

3. In a single trigger mechanism for double-barrel guns, a pair ofoppositely disposed pivoted sears, a trigger, a medially disposedlongitudinally extending sear actuating and selecting member mounted onthe trigger, the tails of the sears extending rearward and havinglaterally extending terminals disposed in overlapping vertically spacedrelation, the sear actuating member having a notch and an annular lugdisposed in such relation to the notch that when the upper angularlyextending end of the lug is disposed beneath one sear the notch will bedisposed beneath the other scar, and when the sear selecting andactuating member is longitudinally shifted the angularly extending lugwill be disposed out of registration with the first named sear and theshoulder at the rear end of the notch will be disposed beneath the othersear.

4. A single trigger mechanism for double barrel guns comprising a gunframe, pivoted hammer holding sears having inturned rear ends mountedwithin the frame, a sear actuating bar slidably connected to thetrigger, said sear actuating bar having a notch formed in its upperedge, a stem projecting upwardly from the bar forwardly of the notch, arearwardly projecting lug formed on the upper end of-said stem, saidsear actuating bar being disposed below the sears, and the rearwardlyextending lug being adapted for engagement with the inturned end of oneof the sears, with the notch disposed below the inturned end of theother sear when the bar is in one of its positions, the upper edge ofthe sear actuating bar adjacent the notch being disposed below theinturned end of said other sear and the rearwardly extending lug beingremoved from its position below the first mentioned sear when said searactuating bar is in its other position.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses.

MARVIN C. SANDERSON.

Witnesses:

JOHN PAPE, ALBERT N. WAMSLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

